Compensation for members in true trouble (13)
I believe the answer is:
reimbursement
'compensation' is the definition.
(I know that reimbursement is a type of compensation)
'members in true trouble' is the wordplay.
'trouble' is an anagram indicator.
'members'+'in'+'true'='membersintrue'
'membersintrue' anagrammed gives 'REIMBURSEMENT'.
'for' acts as a link.
(Other definitions for reimbursement that I've seen before include "Money to cover expenses already incurred" , "Repayment (of money)" , "Compensation for money spent" , "Heel; dagger" .)